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When I receive 1 or more messages, for example, in the What’s App, let’s say I received 3 messages. On top of the icon of the what’s app, there is an orange "ball" with the number 3, in reality the amount of call. In Linked In the same thing and so goes for every application. I am making an App, where the customer will also receive call by this App. How do I do this, i.e., how do I signal the amount of incoming messages? Is there a plugin, dll or similar thing I have to load in my App? I’m waiting for some information.